package com.yunji.framework_template.common.web;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 初始化web请求容器过滤器.
 * 
 * @author qingwu
 * @date 2013-4-8 下午5:37:38
 */
public class InitWebContentFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
                                                                                              ServletException {
        try {
            WebContext.setRequest((HttpServletRequest) request);
            WebContext.setResponse((HttpServletResponse) response);
            chain.doFilter(request, response);
        } finally {
            WebContext.remove();
        }
    }

    @Override
    public void destroy() {
    }

}
